TY  - BOOK
T1  - The build-it book of safety electronics /
DA  - c1976.
CY  - Indianapolis, Ind. :
AU  - Graf, Rudolf F.
AU  - Whalen, George J.,
ET  - 1st ed.
CN  - TK7201
CN  - TK7201
PB  - H.W. Sams,
PP  - Indianapolis, Ind. :
PY  - c1976.
ID  - 6163
KW  - Electric alarms.
KW  - Electric annunciators.
KW  - Electronic control.
KW  - Electric meters.
SN  - 0672213346 :
TI  - The build-it book of safety electronics /
ER  -